I learned on an acoustic Stella, then moved to a better guitar (which means almost any guitar in the world) which I think was some sort of Guild. I traded that after a few years--I was then going on 15 I think--for a Fender Telecaster. Played that for a year, and noticed that it was a completely different type of guitar playing. Traded the Telecaster for an acoustic and played acoustic for the rest of my life, with the occasional drift into electric now and then. As Clinton said, it makes the hands 'stronger' to start with acoustic, and forces the guitarist to pay attention to slides and technique, etc. I'd suggest acoustic first. Then electric. However, people may have views that are opposite and be 100% right for them.